[{"question":"\u010co je to kladka?","answers":["ty\u010d podopret\u00e1 v jednom mieste","\u0161ikm\u00e1 plocha","koleso ot\u00e1\u010dave okolo pevnej osi so \u017eliabkom po obvode","ozuben\u00e9 koleso"],"correct":"koleso ot\u00e1\u010dave okolo pevnej osi so \u017eliabkom po obvode","order":"1"},{"question":"Kedy je na pevnej kladke rovnov\u00e1ha?","answers":["ak s\u00fa na oboch koncoch lana rovnak\u00e9 z\u00e1va\u017eia","z\u00e1le\u017e\u00ed to od po\u010dtu l\u00e1n, na ktor\u00fdch kladka vis\u00ed","ned\u00e1 sa to dosiahnu\u0165","ked jeden koniec lana dr\u017e\u00edme rukou"],"correct":"ak s\u00fa na oboch koncoch lana rovnak\u00e9 z\u00e1va\u017eia","order":"2"},{"question":"Kde nie je pevn\u00e1 kladka?","answers":["na stavbe","v strojoch","v posil\u0148ovni","v serpent\u00edne"],"correct":"v serpent\u00edne","order":"3"},{"question":"Ako zv\u00e4\u010d\u0161uje silu pevn\u00e1 kladka?","answers":["pod\u013ea toho, na ko\u013ek\u00fdch koncoch lana vis\u00ed","nezv\u00e4\u010d\u0161uje silu, len men\u00ed smer, ktor\u00fdm \u0165ah\u00e1me","v\u017edy 4-kr\u00e1t","naopak, silu zmen\u0161uje"],"correct":"nezv\u00e4\u010d\u0161uje silu, len men\u00ed smer, ktor\u00fdm \u0165ah\u00e1me","order":"4"},{"question":"Pre\u010do vo\u013en\u00e1 kladka zmen\u0161uje silu?","answers":["nezmen\u0161uje silu, len men\u00ed smer, ktor\u00fdm \u0165ah\u00e1me","lebo jeden koniec lana, na ktorom kladka vis\u00ed, je upevnen\u00fd","naopak, silu zv\u00e4\u010d\u0161uje","lebo je pohybliv\u00e1"],"correct":"lebo jeden koniec lana, na ktorom kladka vis\u00ed, je upevnen\u00fd","order":"5"},{"question":"\u010co je to kladkostroj?","answers":["pevn\u00e9 a vo\u013en\u00e9 kladky zapojen\u00e9 spolu","len vo\u013en\u00e9 kladky zapojen\u00e9 spolu","stroj na v\u00fdrobu kladky","stroj na rozh\u00fdbanie kladky"],"correct":"pevn\u00e9 a vo\u013en\u00e9 kladky zapojen\u00e9 spolu","order":"6"},{"question":"V kladkostroji vis\u00ed spodn\u00e1 vo\u013en\u00e1 kladka na 6 koncoch lana. Akou silou zdvihneme n\u00e1klad na takom kladkostroji?","answers":["potrebujeme 6-kr\u00e1t v\u00e4\u010d\u0161iu silu","potrebujeme 3-kr\u00e1t v\u00e4\u010d\u0161iu silu","potrebujeme 3-kr\u00e1t men\u0161iu silu","potrebujeme 6-kr\u00e1t men\u0161iu silu"],"correct":"potrebujeme 6-kr\u00e1t men\u0161iu silu","order":"7"},{"question":"Na kladkostroji, v ktorom je len jedna vo\u013en\u00e1 kladka vis\u00ed n\u00e1klad hmotnosti 9kg. Akou silou udr\u017e\u00edme n\u00e1klad?","answers":["90N","9N","45N","4,5N"],"correct":"45N","order":"8"},{"question":"Ktor\u00fd fyzik vymyslel kladkostroj?","answers":["Newton","Eistein","Archimedes","Joule"],"correct":"Archimedes","order":"9"},{"question":"Ako vytvorime rovnov\u00e1hu na kladkostroji s jednou vo\u013enou kladkou?","answers":["Na vo\u013en\u00fd koniec lana d\u00e1me z\u00e1va\u017eie s polovicou hmotnosti n\u00e1kladu zavesen\u00e9ho na kladkostroji.","Na vo\u013en\u00fd koniec lana d\u00e1me z\u00e1va\u017eie rovnakej hmotnosti, ako m\u00e1 n\u00e1klad zavesen\u00fd na kladkostroji.","Na kladkostroj zaves\u00edme n\u00e1klad s trikr\u00e1t v\u00e4\u010d\u0161ou hmotnos\u0165ou, ako m\u00e1 z\u00e1va\u017eie na vo\u013enom konci lana.","ned\u00e1 sa to urobi\u0165"],"correct":"Na vo\u013en\u00fd koniec lana d\u00e1me z\u00e1va\u017eie s polovicou hmotnosti n\u00e1kladu zavesen\u00e9ho na kladkostroji.","order":"10"}]